Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5566324733

Certificate GIA 5566324733

Diamond specifications and retailer prices

From $829 USD
As of November 6, 2026
Save $890 USD (52%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,719 USD at Moon Ocean · As of November 6, 2026
View at Moon Ocean

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566324733. Listed at 5 retailers as of November 6, 2026, with prices from $829 to $1,719, a $890 spread on the same certified stone. Moon Ocean lists it at $1,719. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.90
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5566324733
Dimensions6.16 × 4.97 × 3.26 mm
L/W Ratio1.24
Key to symbols
Crystal, Feather
Top View
6.16 mm4.97 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566324733
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.6%

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: Nov 6
Current: $1,719 USD|Low: $711 USD|High: $1,842 USD|Avg: $1,310 USD|-5.7%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$829 USD
Retailer 5$1,074 USD
Retailer 2$1,205 USD
Retailer 3$1,642 USD
Moon Ocean$1,719 USD

44 data points across 5 retailers

5 retailers$829 USD to $1,719 USD

A
Cheapest Retailer
-
$829 USD
Final sale: no returns
B+
Retailer 2
-
$1,074 USD
View
B+
Retailer 3
-
$1,205 USD
View
B+
Retailer 4
-
$1,642 USD
View
Most Expensive
B
Moon Ocean
NVN-FEB50EF55-733 · Nov 6
$1,719 USD
£1,353 GBP
View
4 more retailers have this diamond
Prices start from $829 USDSave up to $890 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
0.90ct Cushion
$829 USD