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Round|Lab Grown|IGI

1.27ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG786634066

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786634066

Diamond specifications and retailer prices

From £307 GBP
$411 USD
As of October 29, 2026
Save £1,813 GBP (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,120 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.27ct lab-grown round diamond

This 1.27ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786634066 or 786634066. Listed at 22 retailers as of October 29, 2026, with prices from £307 to £2,120, a £1,813 spread on the same certified stone. Brilliant Earth lists it at £2,120. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634066
Dimensions6.95 × 6.99 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.95 mm6.99 mm1.27 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634066
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.6%

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 29
Current: £2,120 GBP|Low: £295 GBP|High: £2,120 GBP|Avg: £749 GBP
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
October 30, 2026
Retailer 15£307 GBP
Retailer 6£344 GBP
Retailer 8£344 GBP
Retailer 3£381 GBP
Retailer 17£381 GBP
Retailer 12£489 GBP
Retailer 9£511 GBP
Retailer 5£554 GBP
Retailer 10£599 GBP
Retailer 2£625 GBP
Retailer 11£654 GBP
Retailer 14£918 GBP
Retailer 16£1,198 GBP
Retailer 4£1,211 GBP
Retailer 7£1,224 GBP
Retailer 13£1,490 GBP
Brilliant Earth£2,120 GBP

42 data points across 17 retailers

22 retailers£307 GBP to £2,120 GBP

A
Cheapest Retailer
-
£307 GBP
$411 USD
A
Retailer 2
-
£344 GBP
$461 USD
View
Final sale: no returns
A
Retailer 3
-
£344 GBP
$461 USD
View
A
Retailer 4
-
£381 GBP
$510 USD
View
A
Retailer 5
-
£381 GBP
$510 USD
View
A
Retailer 6
-
£420 GBP
HK$4,400 HKD
View
A
Retailer 7
-
£489 GBP
$655 USD
View
A
Retailer 8
-
£511 GBP
$685 USD
View
A
Retailer 9
-
£554 GBP
$742 USD
View
A
Retailer 10
-
£599 GBP
€765 EUR
View
A
Retailer 11
-
£618 GBP
$828 USD
View
B+
Retailer 12
-
£625 GBP
View
B+
Retailer 13
-
£654 GBP
ZAR 14,163 ZAR
View
B+
Retailer 14
-
£918 GBP
$1,230 USD
View
Retailer 15
-
£1,198 GBP
$1,605 USD
View
Price last confirmed 23 days ago
B
Retailer 16
-
£1,211 GBP
SGD 2,192 SGD
View
B
Retailer 17
-
£1,224 GBP
$1,640 USD
View
B
Retailer 18
-
£1,250 GBP
$1,675 USD
View
B
Retailer 19
-
£1,394 GBP
$1,868 USD
View
B
Retailer 20
-
£1,399 GBP
$1,875 USD
View
B+
Retailer 21
-
£1,490 GBP
View
Most Expensive
B
Brilliant Earth
19349495A · Oct 29
£2,120 GBP
$2,840 USD
View
21 more retailers have this diamond
Prices start from £307 GBPSave up to £1,813 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
1.27ct Round
£307 GBP