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Heart|Natural|GIA

3.00ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 1425218519

Certificate GIA 1425218519

Diamond specifications and retailer prices

From £15,303 GBP
As of November 6, 2026
Save £4,729 GBP (24%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £20,032 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 3ct natural heart diamond

This 3ct natural heart sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1425218519. Listed at 11 retailers as of November 6, 2026, with prices from £15,303 to £20,032, a £4,729 spread on the same certified stone. 77 Diamonds lists it at £20,032. 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

3.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1425218519
Dimensions8.88 × 9.43 × 5.19 mm
L/W Ratio1.06
Top View
8.88 mm9.43 mm3.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1425218519
Side View
Table 63.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 55.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £20,032 GBP|Low: £15,303 GBP|High: £20,436 GBP|Avg: £17,609 GBP|+0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£15,303 GBP
Retailer 2£16,545 GBP
Retailer 3£18,076 GBP
77 Diamonds£20,032 GBP

46 data points across 4 retailers

11 retailers£15,303 GBP to £20,032 GBP

B
Cheapest Retailer
-
£15,303 GBP
B
Retailer 2
-
£16,461 GBP
View
B+
Retailer 3
-
£16,545 GBP
View
B
Retailer 4
-
£16,703 GBP
View
B
Retailer 5
-
£17,089 GBP
View
B
Retailer 6
-
£17,119 GBP
View
B
Retailer 7
-
£18,076 GBP
View
B
Retailer 8
-
£18,633 GBP
View
B
Retailer 9
-
£18,633 GBP
View
B
Retailer 10
-
£19,253 GBP
View
Most Expensive
B
77 Diamonds
HSZAUEDCFRZ · Nov 6
£20,032 GBP
View
10 more retailers have this diamond
Prices start from £15,303 GBPSave up to £4,729 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+
3.00ct Heart
£15,303 GBP