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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

VG • D/SI2 • GIA 5553045462

Certificate GIA 5553045462

Diamond specifications and retailer prices

From $10,198 AUD
SGD 9,658 SGD
As of November 1, 2026
Save $6,257 AUD (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $16,455 AUD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5553045462. Listed at 13 retailers as of November 1, 2026, with prices from $10,198 to $16,455, a $6,257 spread on the same certified stone. Helzberg Diamonds lists it at $16,455. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.62°
Pavilion angle38.57°
OriginNatural
Grading LabGIA
CertificateGIA 5553045462
Dimensions11.04 × 5.95 × 3.64 mm
L/W Ratio1.86
Top View
11.04 mm5.95 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553045462
Side View
Table 60.0%Crown 41.62°Girdle: STK-VTKPavilion 38.57°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $16,455 AUD|Low: $10,198 AUD|High: $16,789 AUD|Avg: $12,630 AUD|-1.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$10,198 AUD
Retailer 7$10,425 AUD
Retailer 10$10,614 AUD
Retailer 8$10,789 AUD
Retailer 11$10,937 AUD
Retailer 5$11,084 AUD
Retailer 3$12,664 AUD
Retailer 12$12,774 AUD
Retailer 2$12,993 AUD
Retailer 4$12,999 AUD
Retailer 6$14,454 AUD
Helzberg Diamonds$16,455 AUD

30 data points across 12 retailers

13 retailers$10,198 AUD to $16,455 AUD

A
Cheapest Retailer
-
$10,198 AUD
SGD 9,658 SGD
A
Retailer 2
-
$10,425 AUD
$7,306 USD
View
A
Retailer 3
-
$10,614 AUD
SGD 10,052 SGD
View
A
Retailer 4
-
$10,789 AUD
$7,561 USD
View
A
Retailer 5
-
$10,937 AUD
$7,665 USD
View
A
Retailer 6
-
$11,084 AUD
£6,117 GBP
View
A
Retailer 7
-
$12,664 AUD
$8,875 USD
View
A
Retailer 8
-
$12,774 AUD
$8,952 USD
View
A
Retailer 9
-
$12,993 AUD
€8,672 EUR
View
A
Retailer 10
-
$12,999 AUD
$9,110 USD
View
B+
Retailer 11
-
$13,995 AUD
$9,808 USD
View
B+
Retailer 12
-
$14,454 AUD
$10,130 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRLLLJGKLKMI · Nov 1
$16,455 AUD
$11,532 USD
View
12 more retailers have this diamond
Prices start from $10,198 AUDSave up to $6,257 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.

A
1.51ct Marquise
$10,198 AUD