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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 $666 AUD
$468 USD
As of October 30, 2026
Save $3,875 AUD (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,541 AUD at Brilliant Earth · As of October 30, 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 30, 2026, with prices from $666 to $4,541, a $3,875 spread on the same certified stone. Brilliant Earth lists it at $4,541. 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

How it works →
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: $4,541 AUD|Low: $474 AUD|High: $6,008 AUD|Avg: $2,139 AUD|-24.4%
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$666 AUD
Retailer 4$1,039 AUD
Retailer 14$1,039 AUD
Retailer 11$1,178 AUD
Retailer 9$1,210 AUD
Retailer 13$1,267 AUD
Retailer 6$1,702 AUD
Retailer 10$1,717 AUD
Retailer 3$2,051 AUD
Retailer 16$2,067 AUD
Retailer 7$2,418 AUD
Retailer 8$2,688 AUD
Retailer 12$2,723 AUD
Retailer 2$2,759 AUD
Retailer 15$4,100 AUD
Brilliant Earth$4,541 AUD

35 data points across 16 retailers

25 retailers$666 AUD to $4,541 AUD

Retailer 1
-
$595 AUD
$418 USD
Price last confirmed 38 days ago
Retailer 2
-
$595 AUD
$418 USD
View
Price last confirmed 20 days ago
Retailer 3
-
$666 AUD
$468 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$666 AUD
$468 USD
View
Final sale: no returns
Retailer 5
-
$727 AUD
$511 USD
View
Price last confirmed 49 days ago
Retailer 6
-
$727 AUD
$511 USD
View
Price last confirmed 36 days ago
Retailer 7
-
$737 AUD
$518 USD
View
Price last confirmed 18 days ago
Retailer 8
-
$737 AUD
$518 USD
View
Price last confirmed 28 days ago
A
Retailer 9
-
$1,039 AUD
$730 USD
View
A
Retailer 10
-
$1,039 AUD
$730 USD
View
A
Retailer 11
-
$1,178 AUD
€788 EUR
View
A
Retailer 12
-
$1,210 AUD
£669 GBP
View
A
Retailer 13
-
$1,267 AUD
ZAR 14,374 ZAR
View
A
Retailer 14
-
$1,702 AUD
$1,195 USD
View
B+
Retailer 15
-
$1,717 AUD
View
B+
Retailer 16
-
$2,051 AUD
$1,441 USD
View
B+
Retailer 17
-
$2,067 AUD
$1,452 USD
View
Retailer 18
-
$2,369 AUD
$1,664 USD
View
Price last confirmed 23 days ago
Retailer 19
-
$2,369 AUD
$1,664 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
$2,418 AUD
$1,698 USD
View
B+
Retailer 21
-
$2,688 AUD
$1,888 USD
View
B+
Retailer 22
-
$2,723 AUD
£1,506 GBP
View
B+
Retailer 23
-
$2,759 AUD
$1,938 USD
View
B
Retailer 24
-
$4,100 AUD
$2,880 USD
View
Most Expensive
B
Brilliant Earth
21017166A · Oct 30
$4,541 AUD
$3,190 USD
View
24 more retailers have this diamond
Prices start from $666 AUDSave up to $3,875 AUD

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
$666 AUD