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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 $17,866 AUD
$12,550 USD
As of October 31, 2026
Save $13,482 AUD (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $31,348 AUD at MOH London · As of November 1, 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 31, 2026, with prices from $17,866 to $31,348, a $13,482 spread on the same certified stone. MOH London lists it at $31,348. 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: $31,348 AUD|Low: $17,683 AUD|High: $31,726 AUD|Avg: $22,688 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6$17,866 AUD
Retailer 7$19,260 AUD
Retailer 4$19,920 AUD
Retailer 2$21,266 AUD
Retailer 5$21,779 AUD
Retailer 8$24,034 AUD
Retailer 3$25,103 AUD
MOH London$31,348 AUD

37 data points across 8 retailers

7 retailers$17,866 AUD to $31,348 AUD

B
Cheapest Retailer
-
$17,866 AUD
$12,550 USD
B
Retailer 2
-
$19,260 AUD
$13,529 USD
View
B
Retailer 3
-
$19,920 AUD
$13,993 USD
View
Final sale: no returns
B
Retailer 4
-
$21,266 AUD
£11,762 GBP
View
Retailer 5
-
$21,779 AUD
View
Price last confirmed 29 days ago
B
Retailer 6
-
$24,034 AUD
$16,882 USD
View
Most Expensive
B
MOH London
7BD8C127C · Nov 1
$31,348 AUD
£17,339 GBP
View
6 more retailers have this diamond
Prices start from $17,866 AUDSave up to $13,482 AUD

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
$17,866 AUD