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Cushion|Natural|GIA

0.91ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6552439122

Certificate GIA 6552439122

Diamond specifications and retailer prices

From £665 GBP
₹84,801 INR
As of November 1, 2026
Save £2,424 GBP (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £5,078 GBP at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 0.91ct natural cushion diamond

This 0.91ct natural cushion sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552439122. Listed at 9 retailers as of November 1, 2026, with a 365% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.91
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552439122
Dimensions6.17 × 4.91 × 3.41 mm
L/W Ratio1.26
Culet sizeNone
Top View
6.17 mm4.91 mm0.91 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552439122
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.6%

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 1
Current: £5,078 GBP|Low: £598 GBP|High: £5,078 GBP|Avg: £1,164 GBP|-0.0%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4£665 GBP
Retailer 9£1,310 GBP
Retailer 7£2,273 GBP
Retailer 8£2,435 GBP
Retailer 6£2,440 GBP
Retailer 5£2,538 GBP
Retailer 3£2,758 GBP
Retailer 2£3,088 GBP
Moon Ocean£5,078 GBP

26 data points across 9 retailers

9 retailers£665 GBP to £3,088 GBP

A
Cheapest Retailer
-
£665 GBP
₹84,801 INR
B+
Retailer 2
-
£1,310 GBP
ZAR 28,350 ZAR
View
B
Retailer 3
-
£2,273 GBP
$3,046 USD
View
B
Retailer 4
-
£2,435 GBP
$3,263 USD
View
Final sale: no returns
B
Retailer 5
-
£2,440 GBP
$3,270 USD
View
B
Retailer 6
-
£2,538 GBP
$3,400 USD
View
C
Retailer 7
-
£2,758 GBP
View
B
Retailer 8
-
£3,088 GBP
€3,941 EUR
View
Most Expensive
Moon Ocean
NVN-61919BC3B-122 · Nov 2
£5,078 GBP
View
Price under review
8 more retailers have this diamond
Prices start from £665 GBPSave up to £2,424 GBP

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
£665 GBP