Heart|Natural|GIA

0.73ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1539878977

Certificate GIA 1539878977

Diamond specifications and retailer prices

From £554 GBP
As of November 6, 2026
Save £498 GBP (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,862 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.73ct natural heart diamond

This 0.73ct 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 1539878977. Listed at 14 retailers as of November 6, 2026, with a 90% 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

0.73
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 1539878977
Dimensions5.36 × 6.24 × 3.62 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
5.36 mm6.24 mm0.73 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539878977
Side View
Table 60.0%CrownGirdle: STK-VTKPavilion 38.3°Culet: NoneDepth 58.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £764 GBP|Low: £516 GBP|High: £1,414 GBP|Avg: £820 GBP|+5.8%
Retailer 1
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
November 6, 2026
Retailer 2£554 GBP
Retailer 14£649 GBP
Retailer 13£665 GBP
Retailer 10£666 GBP
Retailer 8£669 GBP
Retailer 12£700 GBP
Retailer 9£702 GBP
Retailer 1£764 GBP
Retailer 4£818 GBP
Retailer 7£847 GBP
Retailer 5£1,020 GBP
Retailer 6£1,025 GBP
Retailer 11£1,053 GBP
Retailer 3£1,301 GBP

37 data points across 14 retailers

14 retailers£554 GBP to £1,053 GBP

A
Cheapest Retailer
-
£554 GBP
A
Retailer 2
-
£649 GBP
View
Final sale: no returns
A
Retailer 3
-
£665 GBP
View
A
Retailer 4
-
£666 GBP
View
A
Retailer 5
-
£669 GBP
View
A
Retailer 6
-
£700 GBP
View
B+
Retailer 7
-
£702 GBP
View
B+
Retailer 8
-
£764 GBP
View
B+
Retailer 9
-
£847 GBP
View
Retailer 10
-
£1,020 GBP
View
Price last confirmed 33 days ago
Retailer 11
-
£1,025 GBP
View
Price last confirmed 33 days ago
B+
Retailer 12
-
£1,053 GBP
View
Retailer 13
-
£1,301 GBP
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
f861a4af-29a5-424b-b816-34a8d7a5d2a2 · Sep 25
£1,862 GBP
$2,492 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from £554 GBPSave up to £498 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
0.73ct Heart
£554 GBP