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Cushion|Lab Grown|IGI

1.87ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG691592978

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG691592978

Diamond specifications and retailer prices

From $586 NZD
$330 USD
As of October 30, 2026
Save $3,034 NZD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,620 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.87ct lab-grown cushion diamond

This 1.87ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG691592978 or 691592978. Listed at 19 retailers as of October 30, 2026, with prices from $586 to $3,620, a $3,034 spread on the same certified stone. Brilliant Earth lists it at $3,620. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691592978
Dimensions8.07 × 6.48 × 4.55 mm
L/W Ratio1.25
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
8.07 mm6.48 mm1.87 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691592978
Side View
Table 62.0%Crown 37.3°Girdle: MED-THKPavilion 41°Culet: NoneDepth 70.2%

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: $3,620 NZD|Low: $586 NZD|High: $3,815 NZD|Avg: $1,607 NZD|-5.1%
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
November 1, 2026
Retailer 6$586 NZD
Retailer 4$651 NZD
Retailer 7$1,062 NZD
Retailer 3$1,068 NZD
Retailer 10$1,073 NZD
Retailer 9$1,120 NZD
Retailer 2$1,146 NZD
Retailer 5$1,270 NZD
Retailer 8$1,515 NZD
Retailer 14$2,289 NZD
Retailer 13$2,334 NZD
Retailer 11$2,617 NZD
Retailer 12$2,625 NZD
Brilliant Earth$3,620 NZD

44 data points across 14 retailers

19 retailers$586 NZD to $3,620 NZD

A
Cheapest Retailer
-
$586 NZD
$330 USD
Final sale: no returns
A
Retailer 2
-
$651 NZD
$367 USD
View
A
Retailer 3
-
$1,062 NZD
€570 EUR
View
A
Retailer 4
-
$1,068 NZD
$602 USD
View
A
Retailer 5
-
$1,073 NZD
$605 USD
View
A
Retailer 6
-
$1,120 NZD
ZAR 10,195 ZAR
View
A
Retailer 7
-
$1,146 NZD
£508 GBP
View
A
Retailer 8
-
$1,270 NZD
$716 USD
View
B+
Retailer 9
-
$1,372 NZD
$773 USD
View
B+
Retailer 10
-
$1,515 NZD
A$1,314 AUD
View
B
Retailer 11
-
$2,180 NZD
$1,229 USD
View
B
Retailer 12
-
$2,289 NZD
$1,290 USD
View
Retailer 13
-
$2,334 NZD
A$2,024 AUD
View
Price last confirmed 24 days ago
B
Retailer 14
-
$2,507 NZD
$1,413 USD
View
B
Retailer 15
-
$2,542 NZD
£1,128 GBP
View
Retailer 16
-
$2,617 NZD
$1,475 USD
View
Price last confirmed 13 days ago
B
Retailer 17
-
$2,625 NZD
£1,165 GBP
View
B
Retailer 18
-
$2,846 NZD
$1,604 USD
View
Most Expensive
B
Brilliant Earth
13554911A · Oct 31
$3,620 NZD
$2,040 USD
View
18 more retailers have this diamond
Prices start from $586 NZDSave up to $3,034 NZD

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 Cushion
$586 NZD