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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6285677170

Certificate GIA 6285677170

Diamond specifications and retailer prices

From $972 NZD
As of November 6, 2026
Save $3,330 NZD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,302 NZD at Adiamor · As of November 5, 2026
View at Adiamor

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 6285677170. Listed at 16 retailers as of November 5, 2026, with prices from $972 to $4,302, a $3,330 spread on the same certified stone. Adiamor lists it at $4,302. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6285677170
Dimensions5.26 × 5.21 × 3.84 mm
L/W Ratio1.01
Top View
5.26 mm5.21 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6285677170
Side View
Table 54.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 73.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,697 NZD|Low: $972 NZD|High: $2,792 NZD|Avg: $1,807 NZD|+2.5%
Retailer 1
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
November 7, 2026
Retailer 8$972 NZD
Retailer 2$1,039 NZD
Retailer 7$1,416 NZD
Retailer 4$1,427 NZD
Retailer 11$1,432 NZD
Retailer 14$1,447 NZD
Retailer 6$1,548 NZD
Retailer 15$1,602 NZD
Retailer 5$1,613 NZD
Retailer 1$1,697 NZD
Retailer 3$1,732 NZD
Retailer 10$2,004 NZD
Retailer 12$2,089 NZD
Retailer 13$2,608 NZD
Retailer 9$2,729 NZD

26 data points across 15 retailers

16 retailers$972 NZD to $4,302 NZD

A
Cheapest Retailer
-
$972 NZD
A
Retailer 2
-
$1,039 NZD
View
B+
Retailer 3
-
$1,416 NZD
View
Retailer 4
-
$1,427 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,432 NZD
View
B+
Retailer 6
-
$1,447 NZD
View
B+
Retailer 7
-
$1,548 NZD
View
B+
Retailer 8
-
$1,602 NZD
View
B+
Retailer 9
-
$1,613 NZD
View
B+
Retailer 10
-
$1,697 NZD
View
B+
Retailer 11
-
$1,732 NZD
View
B+
Retailer 12
-
$2,004 NZD
View
B+
Retailer 13
-
$2,089 NZD
View
B
Retailer 14
-
$2,608 NZD
View
B
Retailer 15
-
$2,729 NZD
View
Most Expensive
B
Adiamor
D-51268865 · Nov 5
$4,302 NZD
$2,385 USD
View
15 more retailers have this diamond
Prices start from $972 NZDSave up to $3,330 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
0.90ct Cushion
$972 NZD