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Cushion|Natural|GIA

1.01ct I SI2 Cushion Natural Diamond

GD • I/SI2 • GIA 1378934020

Certificate GIA 1378934020

Diamond specifications and retailer prices

From £1,437 GBP
As of November 6, 2026
Save £637 GBP (31%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,075 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.01ct natural cushion diamond

This 1.01ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1378934020. Listed at 15 retailers as of November 6, 2026, with prices from £1,437 to £2,075, a £637 spread on the same certified stone. Yorxs lists it at £2,075. 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

1.01
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1378934020
Dimensions5.95 × 5.39 × 3.84 mm
L/W Ratio1.10
Culet sizeNone
Top View
5.95 mm5.39 mm1.01 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1378934020
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: 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 6
Current: £1,510 GBP|Low: £1,390 GBP|High: £2,080 GBP|Avg: £1,641 GBP|+0.1%
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
Retailer 14
Retailer 15
Yorxs
November 6, 2026
Retailer 12£1,390 GBP
Retailer 9£1,437 GBP
Retailer 5£1,440 GBP
Retailer 4£1,446 GBP
Retailer 11£1,508 GBP
Retailer 1£1,510 GBP
Retailer 13£1,550 GBP
Retailer 14£1,597 GBP
Retailer 8£1,674 GBP
Retailer 10£1,742 GBP
Retailer 2£1,743 GBP
Retailer 15£1,756 GBP
Retailer 3£1,771 GBP
Retailer 7£1,771 GBP
Retailer 6£1,830 GBP
Yorxs£2,075 GBP

23 data points across 16 retailers

15 retailers£1,437 GBP to £2,075 GBP

B+
Cheapest Retailer
-
£1,437 GBP
B+
Retailer 2
-
£1,440 GBP
View
B+
Retailer 3
-
£1,446 GBP
View
B+
Retailer 4
-
£1,508 GBP
View
B+
Retailer 5
-
£1,510 GBP
View
B+
Retailer 6
-
£1,550 GBP
View
B
Retailer 7
-
£1,597 GBP
View
B
Retailer 8
-
£1,674 GBP
View
B
Retailer 9
-
£1,742 GBP
View
B
Retailer 10
-
£1,743 GBP
View
B
Retailer 11
-
£1,756 GBP
View
B
Retailer 12
-
£1,771 GBP
View
B
Retailer 13
-
£1,771 GBP
View
B
Retailer 14
-
£1,830 GBP
View
Most Expensive
B
Yorxs
518346376 · Nov 6
£2,075 GBP
€2,645 EUR
View
14 more retailers have this diamond
Prices start from £1,437 GBPSave up to £637 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+
1.01ct Cushion
£1,437 GBP