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Cushion|Natural|GIA

0.91ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6382198100

Certificate GIA 6382198100

Diamond specifications and retailer prices

From £1,270 GBP
$1,702 USD
As of November 2, 2026
Save £658 GBP (34%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,928 GBP at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 6382198100. Listed at 7 retailers as of November 1, 2026, with prices from £1,270 to £1,928, a £658 spread on the same certified stone. 77 Diamonds lists it at £1,928. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6382198100
Dimensions5.60 × 5.02 × 3.58 mm
L/W Ratio1.12
Top View
5.60 mm5.02 mm0.91 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6382198100
Side View
Table 68.0%CrownGirdle: THN-ETHPavilionCulet: NoneDepth 71.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,928 GBP|Low: £1,254 GBP|High: £1,947 GBP|Avg: £1,561 GBP|+1.4%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2£1,270 GBP
Retailer 3£1,485 GBP
77 Diamonds£1,928 GBP

33 data points across 3 retailers

7 retailers£1,270 GBP to £1,928 GBP

B+
Cheapest Retailer
-
£1,270 GBP
$1,702 USD
B+
Retailer 2
-
£1,274 GBP
$1,707 USD
View
B+
Retailer 3
-
£1,292 GBP
$1,731 USD
View
B+
Retailer 4
-
£1,329 GBP
$1,781 USD
View
B+
Retailer 5
-
£1,333 GBP
A$2,748 AUD
View
B
Retailer 6
-
£1,485 GBP
$1,989 USD
View
Most Expensive
B
77 Diamonds
CUSMBBEPHTDQ3 · Nov 1
£1,928 GBP
View
6 more retailers have this diamond
Prices start from £1,270 GBPSave up to £658 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.

B+
0.91ct Cushion
£1,270 GBP