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Cushion|Natural|GIA

1.02ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1377937186

Certificate GIA 1377937186

Diamond specifications and retailer prices

From £2,036 GBP
$2,728 USD
As of October 28, 2026
Save £892 GBP (30%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,928 GBP at Yorxs · As of October 31, 2026
View at Yorxs

About this 1.02ct natural cushion diamond

This 1.02ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1377937186. Listed at 16 retailers as of October 28, 2026, with prices from £2,036 to £2,928, a £892 spread on the same certified stone. Yorxs lists it at £2,928. 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

1.02
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1377937186
Dimensions5.94 × 5.75 × 3.64 mm
L/W Ratio1.03
Culet sizeNone
Top View
5.94 mm5.75 mm1.02 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1377937186
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.3%

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: Oct 28
Current: £2,618 GBP|Low: £2,010 GBP|High: £3,388 GBP|Avg: £2,475 GBP|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Yorxs
October 31, 2026
Retailer 6£2,010 GBP
Retailer 5£2,036 GBP
Retailer 3£2,082 GBP
Retailer 2£2,263 GBP
Retailer 7£2,296 GBP
Retailer 4£2,449 GBP
Retailer 1£2,618 GBP
Retailer 9£2,672 GBP
Yorxs£2,928 GBP
Retailer 8£3,388 GBP

41 data points across 10 retailers

16 retailers£2,036 GBP to £2,928 GBP

B+
Cheapest Retailer
-
£2,036 GBP
$2,728 USD
B+
Retailer 2
-
£2,082 GBP
$2,790 USD
View
B+
Retailer 3
-
£2,124 GBP
$2,846 USD
View
B+
Retailer 4
-
£2,176 GBP
$2,915 USD
View
B+
Retailer 5
-
£2,263 GBP
SGD 4,098 SGD
View
B+
Retailer 6
-
£2,281 GBP
$3,057 USD
View
B
Retailer 7
-
£2,296 GBP
$3,076 USD
View
B+
Retailer 8
-
£2,449 GBP
$3,282 USD
View
B+
Retailer 9
-
£2,471 GBP
CA$4,598 CAD
View
B
Retailer 10
-
£2,582 GBP
$3,460 USD
View
B
Retailer 11
-
£2,582 GBP
$3,460 USD
View
B
Retailer 12
-
£2,618 GBP
View
B
Retailer 13
-
£2,626 GBP
$3,519 USD
View
B
Retailer 14
-
£2,672 GBP
$3,580 USD
View
B
Retailer 15
-
£2,911 GBP
$3,900 USD
View
Most Expensive
B
Yorxs
518485380 · Oct 31
£2,928 GBP
€3,737 EUR
View
15 more retailers have this diamond
Prices start from £2,036 GBPSave up to £892 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+
1.02ct Cushion
£2,036 GBP