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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6531598937

Certificate GIA 6531598937

Diamond specifications and retailer prices

From £2,022 GBP
As of November 6, 2026
Save £578 GBP (22%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,600 GBP at Jared · As of November 6, 2026
View at Jared

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D 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 6531598937. Listed at 10 retailers as of November 6, 2026, with prices from £2,022 to £2,600, a £578 spread on the same certified stone. Jared lists it at £2,600. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6531598937
Dimensions6.54 × 7.41 × 4.38 mm
L/W Ratio1.13
Top View
6.54 mm7.41 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531598937
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.1%

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 6
Current: £2,600 GBP|Low: £1,943 GBP|High: £2,959 GBP|Avg: £2,495 GBP|-9.1%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4£2,022 GBP
Retailer 5£2,190 GBP
Retailer 10£2,266 GBP
Retailer 9£2,306 GBP
Retailer 2£2,341 GBP
Retailer 6£2,387 GBP
Retailer 3£2,518 GBP
Retailer 7£2,518 GBP
Retailer 8£2,548 GBP
Jared£2,600 GBP

42 data points across 10 retailers

10 retailers£2,022 GBP to £2,600 GBP

A
Cheapest Retailer
-
£2,022 GBP
Final sale: no returns
B+
Retailer 2
-
£2,190 GBP
View
B+
Retailer 3
-
£2,266 GBP
View
B+
Retailer 4
-
£2,306 GBP
View
B+
Retailer 5
-
£2,341 GBP
View
B+
Retailer 6
-
£2,387 GBP
View
B+
Retailer 7
-
£2,518 GBP
View
B+
Retailer 8
-
£2,518 GBP
View
B+
Retailer 9
-
£2,548 GBP
View
Most Expensive
B+
Jared
156794183 · Nov 6
£2,600 GBP
$3,480 USD
View
9 more retailers have this diamond
Prices start from £2,022 GBPSave up to £578 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 Heart
£2,022 GBP