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1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2564084734

Certificate GIA 2564084734

Diamond specifications and retailer prices

From £968 GBP
SGD 1,753 SGD
As of October 31, 2026
Save £886 GBP (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,854 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2564084734. Listed at 13 retailers as of October 26, 2026, with prices from £968 to £1,854, a £886 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,854. 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

1.21
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2564084734
Dimensions6.76 × 6.80 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.76 mm6.80 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2564084734
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 31
Current: £1,253 GBP|Low: £968 GBP|High: £2,023 GBP|Avg: £1,382 GBP|-7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
October 31, 2026
Retailer 11£968 GBP
Retailer 7£1,125 GBP
Retailer 8£1,144 GBP
Retailer 9£1,146 GBP
Retailer 3£1,225 GBP
Retailer 4£1,237 GBP
Retailer 1£1,253 GBP
Retailer 10£1,254 GBP
Retailer 12£1,358 GBP
Retailer 5£1,469 GBP
Retailer 2£1,509 GBP
Retailer 6£1,590 GBP
Wholesale Diamonds Direct£1,854 GBP

30 data points across 13 retailers

13 retailers£968 GBP to £1,854 GBP

A
Cheapest Retailer
-
£968 GBP
SGD 1,753 SGD
A
Retailer 2
-
£1,125 GBP
$1,507 USD
View
A
Retailer 3
-
£1,144 GBP
$1,533 USD
View
A
Retailer 4
-
£1,146 GBP
$1,535 USD
View
A
Retailer 5
-
£1,225 GBP
SGD 2,218 SGD
View
A
Retailer 6
-
£1,237 GBP
$1,658 USD
View
A
Retailer 7
-
£1,253 GBP
View
A
Retailer 8
-
£1,254 GBP
$1,680 USD
View
A
Retailer 9
-
£1,358 GBP
$1,820 USD
View
A
Retailer 10
-
£1,469 GBP
View
A
Retailer 11
-
£1,509 GBP
$2,022 USD
View
B+
Retailer 12
-
£1,590 GBP
€2,029 EUR
View
Most Expensive
B+
Wholesale Diamonds Direct
570927854 · Oct 26
£1,854 GBP
$2,484 USD
View
12 more retailers have this diamond
Prices start from £968 GBPSave up to £886 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
1.21ct Round
£968 GBP