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Marquise|Natural|HRD

1.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • HRD 260000067579

Certificate HRD 260000067579

Diamond specifications and retailer prices

From $8,297 AUD
As of November 4, 2026
Save $5,719 AUD (41%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $14,016 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded H 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 HRD 260000067579. Listed at 5 retailers as of November 2, 2026, with prices from $8,297 to $14,016, a $5,719 spread on the same certified stone. MOH London lists it at $14,016. 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

1.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000067579
Dimensions10.92 × 5.94 × 3.81 mm
L/W Ratio1.84
Top View
10.92 mm5.94 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000067579
Side View
Table 60.0%CrownGirdlePavilionCuletDepth 64.1%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $14,016 AUD|Low: $8,297 AUD|High: $15,413 AUD|Avg: $10,751 AUD|-8.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 5$8,297 AUD
Retailer 4$8,405 AUD
Retailer 2$9,248 AUD
Retailer 3$10,393 AUD
MOH London$14,016 AUD

40 data points across 5 retailers

5 retailers$8,297 AUD to $14,016 AUD

B+
Cheapest Retailer
-
$8,297 AUD
B+
Retailer 2
-
$8,405 AUD
View
B+
Retailer 3
-
$9,248 AUD
View
B+
Retailer 4
-
$10,393 AUD
View
Most Expensive
B
MOH London
51643BF08 · Nov 2
$14,016 AUD
£7,583 GBP
View
4 more retailers have this diamond
Prices start from $8,297 AUDSave up to $5,719 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+
1.51ct Marquise
$8,297 AUD