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Cushion|Lab Grown|IGI

0.91ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG517283270

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG517283270

Diamond specifications and retailer prices

From $139 USD
As of October 30, 2026
Save $1,154 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,293 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.91ct lab-grown cushion diamond

This 0.91ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG517283270 or 517283270. Listed at 12 retailers as of October 29, 2026, with prices from $139 to $1,293, a $1,154 spread on the same certified stone. MOH London lists it at $1,293. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.91
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517283270
Dimensions6.80 × 5.50 × 3.43 mm
L/W Ratio1.24
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
6.80 mm5.50 mm0.91 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG517283270
Side View
Table 58.5%Crown 34.1°Girdle: MED-THKPavilion 37.3°Culet: NoneDepth 62.4%

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: $1,293 USD|Low: $139 USD|High: $1,302 USD|Avg: $446 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10$139 USD
Retailer 7$164 USD
Retailer 4$277 USD
Retailer 8$295 USD
Retailer 5$317 USD
Retailer 3$320 USD
Retailer 9$473 USD
Retailer 6$540 USD
Retailer 2$600 USD
MOH London$1,293 USD

43 data points across 10 retailers

12 retailers$139 USD to $1,293 USD

A
Cheapest Retailer
-
$139 USD
Final sale: no returns
A
Retailer 2
-
$164 USD
View
B+
Retailer 3
-
$259 USD
View
A
Retailer 4
-
$277 USD
€264 EUR
View
B+
Retailer 5
-
$295 USD
View
B+
Retailer 6
-
$317 USD
£250 GBP
View
B+
Retailer 7
-
$320 USD
£252 GBP
View
B+
Retailer 8
-
$473 USD
View
Retailer 9
-
$540 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$552 USD
View
B
Retailer 11
-
$600 USD
View
Most Expensive
B
MOH London
LG517283270 · Oct 29
$1,293 USD
£1,018 GBP
View
11 more retailers have this diamond
Prices start from $139 USDSave up to $1,154 USD

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
0.91ct Cushion
$139 USD