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Round|Lab Grown|IGI

1.87ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG815677291

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815677291

Diamond specifications and retailer prices

From £349 GBP
$468 USD
As of October 30, 2026
Save £2,711 GBP (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £3,060 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.87ct lab-grown round diamond

This 1.87ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815677291 or 815677291. Listed at 25 retailers as of October 29, 2026, with prices from £349 to £3,060, a £2,711 spread on the same certified stone. Brilliant Earth lists it at £3,060. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.87
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815677291
Dimensions7.96 × 7.92 × 4.82 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.96 mm7.92 mm1.87 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815677291
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,060 GBP|Low: £249 GBP|High: £3,150 GBP|Avg: £1,123 GBP|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 5£349 GBP
Retailer 4£545 GBP
Retailer 14£545 GBP
Retailer 11£618 GBP
Retailer 9£634 GBP
Retailer 13£664 GBP
Retailer 6£892 GBP
Retailer 10£900 GBP
Retailer 3£1,075 GBP
Retailer 16£1,084 GBP
Retailer 7£1,267 GBP
Retailer 8£1,409 GBP
Retailer 12£1,427 GBP
Retailer 2£1,446 GBP
Retailer 15£2,149 GBP
Brilliant Earth£3,060 GBP

35 data points across 16 retailers

25 retailers£349 GBP to £3,060 GBP

Retailer 1
-
£312 GBP
$418 USD
Price last confirmed 38 days ago
Retailer 2
-
£312 GBP
$418 USD
View
Price last confirmed 20 days ago
Retailer 3
-
£349 GBP
$468 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
£349 GBP
$468 USD
View
Final sale: no returns
Retailer 5
-
£381 GBP
$511 USD
View
Price last confirmed 49 days ago
Retailer 6
-
£381 GBP
$511 USD
View
Price last confirmed 35 days ago
Retailer 7
-
£387 GBP
$518 USD
View
Price last confirmed 18 days ago
Retailer 8
-
£387 GBP
$518 USD
View
Price last confirmed 28 days ago
A
Retailer 9
-
£545 GBP
$730 USD
View
A
Retailer 10
-
£545 GBP
$730 USD
View
A
Retailer 11
-
£618 GBP
€788 EUR
View
A
Retailer 12
-
£634 GBP
View
A
Retailer 13
-
£664 GBP
ZAR 14,374 ZAR
View
A
Retailer 14
-
£892 GBP
$1,195 USD
View
A
Retailer 15
-
£900 GBP
A$1,855 AUD
View
B+
Retailer 16
-
£1,075 GBP
$1,441 USD
View
B+
Retailer 17
-
£1,084 GBP
$1,452 USD
View
Retailer 18
-
£1,242 GBP
$1,664 USD
View
Price last confirmed 22 days ago
Retailer 19
-
£1,242 GBP
$1,664 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£1,267 GBP
$1,698 USD
View
B+
Retailer 21
-
£1,409 GBP
$1,888 USD
View
B+
Retailer 22
-
£1,427 GBP
View
B+
Retailer 23
-
£1,446 GBP
$1,938 USD
View
B
Retailer 24
-
£2,149 GBP
$2,880 USD
View
Most Expensive
B
Brilliant Earth
21017166A · Oct 29
£3,060 GBP
$4,100 USD
View
24 more retailers have this diamond
Prices start from £349 GBPSave up to £2,711 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.87ct Round
£349 GBP