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Heart|Natural|GIA

0.63ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6545741307

Certificate GIA 6545741307

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of November 2, 2026
Save £965 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,241 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.63ct natural heart diamond

This 0.63ct natural heart sits in the half to three-quarter carat band, graded I 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 6545741307. Listed at 8 retailers as of October 30, 2026, with prices from £276 to £1,241, a £965 spread on the same certified stone. NZ Jewellers lists it at £1,241. 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

0.63
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545741307
Dimensions5.27 × 5.86 × 3.47 mm
L/W Ratio1.11
Top View
5.27 mm5.86 mm0.63 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545741307
Side View
Table 56.0%CrownGirdle: ThickPavilionCulet: NoneDepth 59.2%

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 2
Current: £1,241 GBP|Low: £245 GBP|High: £1,241 GBP|Avg: £568 GBP|+1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£276 GBP
Retailer 3£295 GBP
Retailer 9£446 GBP
Retailer 7£494 GBP
Retailer 2£497 GBP
Retailer 6£504 GBP
Retailer 5£591 GBP
Retailer 4£915 GBP
NZ Jewellers£1,241 GBP

41 data points across 9 retailers

8 retailers£276 GBP to £1,241 GBP

A
Cheapest Retailer
-
£276 GBP
$370 USD
Final sale: no returns
A
Retailer 2
-
£295 GBP
₹37,700 INR
View
B+
Retailer 3
-
£494 GBP
$662 USD
View
B+
Retailer 4
-
£497 GBP
View
B+
Retailer 5
-
£504 GBP
$675 USD
View
B
Retailer 6
-
£591 GBP
€754 EUR
View
B
Retailer 7
-
£915 GBP
View
Most Expensive
B
NZ Jewellers
a0bf16b7-31a7-4c08-ac10-32005109cfa8 · Oct 30
£1,241 GBP
$1,663 USD
View
7 more retailers have this diamond
Prices start from £276 GBPSave up to £965 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
0.63ct Heart
£276 GBP