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Round|Natural|GIA

1.21ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1565756922

Certificate GIA 1565756922

Diamond specifications and retailer prices

From £1,251 GBP
HK$13,100 HKD
As of November 1, 2026
Save £2,259 GBP (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,510 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 1565756922. Listed at 15 retailers as of October 30, 2026, with prices from £1,251 to £3,510, a £2,259 spread on the same certified stone. NZ Jewellers lists it at £3,510. 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
FluorescenceNone
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1565756922
Dimensions6.81 × 6.76 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
6.81 mm6.76 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1565756922
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

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: Nov 1
Current: £3,510 GBP|Low: £1,232 GBP|High: £3,510 GBP|Avg: £1,885 GBP
NZ Jewellers
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
November 2, 2026
Retailer 11£1,251 GBP
Retailer 5£1,473 GBP
Retailer 15£1,517 GBP
Retailer 4£1,549 GBP
Retailer 13£1,596 GBP
Retailer 2£1,615 GBP
Retailer 6£1,679 GBP
Retailer 10£1,679 GBP
Retailer 3£1,783 GBP
Retailer 8£1,817 GBP
Retailer 14£1,924 GBP
Retailer 12£1,937 GBP
Retailer 9£2,087 GBP
Retailer 7£2,957 GBP
NZ Jewellers£3,510 GBP

5 data points across 15 retailers

15 retailers£1,251 GBP to £3,510 GBP

A
Cheapest Retailer
-
£1,251 GBP
HK$13,100 HKD
A
Retailer 2
-
£1,473 GBP
$1,973 USD
View
A
Retailer 3
-
£1,517 GBP
$2,032 USD
View
B+
Retailer 4
-
£1,549 GBP
$2,076 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,596 GBP
$2,138 USD
View
B+
Retailer 6
-
£1,615 GBP
View
B+
Retailer 7
-
£1,679 GBP
$2,250 USD
View
B+
Retailer 8
-
£1,679 GBP
$2,250 USD
View
B+
Retailer 9
-
£1,783 GBP
$2,389 USD
View
B+
Retailer 10
-
£1,817 GBP
View
B+
Retailer 11
-
£1,924 GBP
View
B+
Retailer 12
-
£1,937 GBP
$2,596 USD
View
B
Retailer 13
-
£2,087 GBP
€2,663 EUR
View
B
Retailer 14
-
£2,957 GBP
View
Most Expensive
B
NZ Jewellers
f5cb1f38-a4cc-4222-996e-d15052e8e27e · Oct 30
£3,510 GBP
$4,703 USD
View
14 more retailers have this diamond
Prices start from £1,251 GBPSave up to £2,259 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
£1,251 GBP