Heart|Natural|GIA

0.71ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6551621588

Certificate GIA 6551621588

Diamond specifications and retailer prices

From £535 GBP
SGD 970 SGD
As of November 1, 2026
Save £186 GBP (26%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £813 GBP at Wholesale Diamonds Direct · As of October 14, 2026
View at Wholesale Diamonds Direct

About this 0.71ct natural heart diamond

This 0.71ct natural heart sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551621588. Listed at 7 retailers as of November 1, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.71
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.44°
Pavilion angle39.07°
OriginNatural
Grading LabGIA
CertificateGIA 6551621588
Dimensions5.38 × 6.09 × 3.64 mm
L/W Ratio1.13
Culet sizeNone
Top View
5.38 mm6.09 mm0.71 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551621588
Side View
Table 60.0%Crown 38.44°Girdle: STK-VTKPavilion 39.07°Culet: NoneDepth 59.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £600 GBP|Low: £363 GBP|High: £1,065 GBP|Avg: £659 GBP|+5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 2, 2026
Retailer 10£363 GBP
Retailer 4£525 GBP
Retailer 7£535 GBP
Retailer 8£559 GBP
Retailer 5£564 GBP
Retailer 1£600 GBP
Retailer 6£696 GBP
Retailer 2£721 GBP
Retailer 3£785 GBP
Wholesale Diamonds Direct£813 GBP
Retailer 9£1,065 GBP

19 data points across 11 retailers

7 retailers£535 GBP to £721 GBP

Retailer 1
-
£525 GBP
SGD 952 SGD
Price last confirmed 13 days ago
B+
Retailer 2
-
£535 GBP
SGD 970 SGD
View
B+
Retailer 3
-
£564 GBP
$757 USD
View
B+
Retailer 4
-
£600 GBP
View
Retailer 5
-
£696 GBP
$934 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
£721 GBP
$967 USD
View
Most Expensive
Wholesale Diamonds Direct
419410486 · Oct 14
£813 GBP
$1,090 USD
View
Price last confirmed 18 days ago
6 more retailers have this diamond
Prices start from £535 GBPSave up to £186 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+
0.71ct Heart
£535 GBP