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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 6375936754

Certificate GIA 6375936754

Diamond specifications and retailer prices

From £1,526 GBP
As of November 6, 2026
Save £693 GBP (31%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,219 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6375936754. Listed at 16 retailers as of November 6, 2026, with prices from £1,526 to £2,219, a £693 spread on the same certified stone. Yorxs lists it at £2,219. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375936754
Dimensions5.57 × 5.30 × 3.85 mm
L/W Ratio1.05
Top View
5.57 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375936754
Side View
Table 64.0%CrownGirdle: - SPavilionCulet: NoneDepth 72.7%

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 6
Current: £1,616 GBP|Low: £1,482 GBP|High: £2,225 GBP|Avg: £1,748 GBP|+0.2%
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
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Retailer 15
Yorxs
November 6, 2026
Retailer 12£1,482 GBP
Retailer 8£1,526 GBP
Retailer 7£1,538 GBP
Retailer 6£1,545 GBP
Retailer 11£1,612 GBP
Retailer 1£1,616 GBP
Retailer 13£1,659 GBP
Retailer 3£1,688 GBP
Retailer 10£1,777 GBP
Retailer 9£1,849 GBP
Retailer 5£1,865 GBP
Retailer 2£1,875 GBP
Retailer 15£1,875 GBP
Retailer 4£1,879 GBP
Retailer 14£1,942 GBP
Yorxs£2,219 GBP

23 data points across 16 retailers

16 retailers£1,526 GBP to £2,219 GBP

B+
Cheapest Retailer
-
£1,526 GBP
B+
Retailer 2
-
£1,538 GBP
View
B+
Retailer 3
-
£1,545 GBP
View
B+
Retailer 4
-
£1,597 GBP
View
B+
Retailer 5
-
£1,612 GBP
View
B+
Retailer 6
-
£1,616 GBP
View
B
Retailer 7
-
£1,659 GBP
View
B
Retailer 8
-
£1,688 GBP
View
B
Retailer 9
-
£1,777 GBP
View
B
Retailer 10
-
£1,849 GBP
View
B
Retailer 11
-
£1,865 GBP
View
B
Retailer 12
-
£1,875 GBP
View
B
Retailer 13
-
£1,875 GBP
View
B
Retailer 14
-
£1,879 GBP
View
B
Retailer 15
-
£1,942 GBP
View
Most Expensive
B
Yorxs
518346560 · Nov 6
£2,219 GBP
€2,829 EUR
View
15 more retailers have this diamond
Prices start from £1,526 GBPSave up to £693 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+
1.00ct Cushion
£1,526 GBP