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Cushion|Natural|GIA

1.02ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 6551417049

Certificate GIA 6551417049

Diamond specifications and retailer prices

From £1,271 GBP
HK$13,300 HKD
As of October 30, 2026
Save £782 GBP (38%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,898 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.02ct natural cushion diamond

This 1.02ct natural cushion sits in the classic one-carat band, graded E 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 6551417049. Listed at 21 retailers as of October 29, 2026, with a 62% 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

1.02
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551417049
Dimensions5.98 × 5.82 × 3.83 mm
L/W Ratio1.03
Girdle conditionFaceted
Top View
5.98 mm5.82 mm1.02 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551417049
Side View
Table 65.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 65.8%

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: Oct 30
Current: £2,898 GBP|Low: £1,271 GBP|High: £3,050 GBP|Avg: £1,736 GBP|-5.0%
MOH London
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 3£1,271 GBP
Retailer 11£1,299 GBP
Retailer 5£1,375 GBP
Retailer 18£1,408 GBP
Retailer 19£1,516 GBP
Retailer 8£1,519 GBP
Retailer 13£1,520 GBP
Retailer 7£1,529 GBP
Retailer 9£1,582 GBP
Retailer 2£1,610 GBP
Retailer 16£1,614 GBP
Retailer 10£1,622 GBP
Retailer 14£1,690 GBP
Retailer 4£1,702 GBP
Retailer 12£1,806 GBP
Retailer 17£1,986 GBP
Retailer 15£2,052 GBP
Retailer 6£2,629 GBP
MOH London£2,898 GBP

19 data points across 19 retailers

21 retailers£1,271 GBP to £2,052 GBP

A
Cheapest Retailer
-
£1,271 GBP
HK$13,300 HKD
A
Retailer 2
-
£1,299 GBP
$1,740 USD
View
A
Retailer 3
-
£1,375 GBP
$1,843 USD
View
Final sale: no returns
A
Retailer 4
-
£1,408 GBP
$1,886 USD
View
A
Retailer 5
-
£1,516 GBP
$2,032 USD
View
A
Retailer 6
-
£1,519 GBP
$2,035 USD
View
A
Retailer 7
-
£1,520 GBP
€1,940 EUR
View
A
Retailer 8
-
£1,529 GBP
$2,049 USD
View
A
Retailer 9
-
£1,582 GBP
$2,120 USD
View
A
Retailer 10
-
£1,610 GBP
View
A
Retailer 11
-
£1,614 GBP
$2,162 USD
View
A
Retailer 12
-
£1,622 GBP
$2,173 USD
View
A
Retailer 13
-
£1,690 GBP
$2,265 USD
View
A
Retailer 14
-
£1,702 GBP
$2,281 USD
View
B+
Retailer 15
-
£1,806 GBP
View
B+
Retailer 16
-
£1,818 GBP
A$3,748 AUD
View
Retailer 17
-
£1,986 GBP
ZAR 42,994 ZAR
View
Price last confirmed 9 days ago
B+
Retailer 18
-
£2,052 GBP
€2,619 EUR
View
Retailer 19
-
£2,134 GBP
A$4,399 AUD
View
Price last confirmed 23 days ago
Retailer 20
-
£2,629 GBP
$3,522 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
C81AA20E3 · Oct 21
£2,898 GBP
View
Price last confirmed 10 days ago
20 more retailers have this diamond
Prices start from £1,271 GBPSave up to £782 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
1.02ct Cushion
£1,271 GBP