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Heart|Natural|GIA

0.64ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6535657775

Certificate GIA 6535657775

Diamond specifications and retailer prices

From £381 GBP
₹48,621 INR
As of November 1, 2026
Save £1,212 GBP (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,593 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.64ct natural heart diamond

This 0.64ct natural heart sits in the half to three-quarter 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 6535657775. Listed at 18 retailers as of October 30, 2026, with prices from £381 to £1,593, a £1,212 spread on the same certified stone. NZ Jewellers lists it at £1,593. 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

0.64
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535657775
Dimensions5.17 × 6.09 × 3.50 mm
L/W Ratio1.18
Top View
5.17 mm6.09 mm0.64 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535657775
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.5%

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: £1,593 GBP|Low: £380 GBP|High: £1,593 GBP|Avg: £639 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
Retailer 16
Retailer 17
November 1, 2026
Retailer 2£381 GBP
Retailer 16£430 GBP
Retailer 9£452 GBP
Retailer 4£469 GBP
Retailer 14£489 GBP
Retailer 17£493 GBP
Retailer 7£508 GBP
Retailer 15£528 GBP
Retailer 8£532 GBP
Retailer 6£586 GBP
Retailer 13£620 GBP
Retailer 10£623 GBP
Retailer 12£633 GBP
Retailer 5£634 GBP
Retailer 3£715 GBP
Retailer 11£1,172 GBP
NZ Jewellers£1,593 GBP

23 data points across 17 retailers

18 retailers£381 GBP to £1,593 GBP

A
Cheapest Retailer
-
£381 GBP
₹48,621 INR
A
Retailer 2
-
£430 GBP
HK$4,500 HKD
View
A
Retailer 3
-
£452 GBP
$606 USD
View
A
Retailer 4
-
£469 GBP
$628 USD
View
Final sale: no returns
Retailer 5
-
£489 GBP
€624 EUR
View
Price last confirmed 6 days ago
A
Retailer 6
-
£493 GBP
SGD 892 SGD
View
A
Retailer 7
-
£508 GBP
$680 USD
View
A
Retailer 8
-
£528 GBP
$707 USD
View
A
Retailer 9
-
£532 GBP
SGD 964 SGD
View
A
Retailer 10
-
£586 GBP
$785 USD
View
A
Retailer 11
-
£620 GBP
View
B+
Retailer 12
-
£623 GBP
View
B+
Retailer 13
-
£633 GBP
View
B+
Retailer 14
-
£634 GBP
$849 USD
View
B+
Retailer 15
-
£715 GBP
$957 USD
View
Retailer 16
-
£723 GBP
$968 USD
View
Price last confirmed 15 days ago
B
Retailer 17
-
£1,172 GBP
View
Most Expensive
B
NZ Jewellers
c593a272-9d06-45be-94bd-0cb6913adfcf · Oct 30
£1,593 GBP
$2,134 USD
View
17 more retailers have this diamond
Prices start from £381 GBPSave up to £1,212 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
0.64ct Heart
£381 GBP