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Heart|Natural|GIA

1.72ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 2151074080

Certificate GIA 2151074080

Diamond specifications and retailer prices

From £9,366 GBP
$12,550 USD
As of October 31, 2026
Save £3,233 GBP (26%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £16,523 GBP at MOH London · As of October 19, 2026
View at MOH London

About this 1.72ct natural heart diamond

This 1.72ct natural heart sits in the one-and-a-half to two 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 2151074080. Listed at 7 retailers as of October 27, 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

1.72
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2151074080
Dimensions8.20 × 8.28 × 4.20 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.20 mm8.28 mm1.72 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2151074080
Side View
Table 55.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 50.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £16,523 GBP|Low: £9,270 GBP|High: £16,633 GBP|Avg: £11,882 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6£9,366 GBP
Retailer 7£10,097 GBP
Retailer 4£10,443 GBP
Retailer 2£11,149 GBP
Retailer 5£11,418 GBP
Retailer 8£12,600 GBP
Retailer 3£13,161 GBP
MOH London£16,523 GBP

38 data points across 8 retailers

7 retailers£9,366 GBP to £12,600 GBP

B
Cheapest Retailer
-
£9,366 GBP
$12,550 USD
B
Retailer 2
-
£10,097 GBP
$13,529 USD
View
B
Retailer 3
-
£10,443 GBP
$13,993 USD
View
Final sale: no returns
B
Retailer 4
-
£11,149 GBP
View
Retailer 5
-
£11,418 GBP
A$23,536 AUD
View
Price last confirmed 28 days ago
B
Retailer 6
-
£12,600 GBP
$16,882 USD
View
Most Expensive
MOH London
7BD8C127C · Oct 19
£16,523 GBP
View
Price last confirmed 13 days ago
6 more retailers have this diamond
Prices start from £9,366 GBPSave up to £3,233 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
1.72ct Heart
£9,366 GBP