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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

GD • F/SI1 • GIA 2556946487

Certificate GIA 2556946487

Diamond specifications and retailer prices

From $14,804 AUD
SGD 14,020 SGD
As of November 1, 2026
Save $3,475 AUD (19%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $18,279 AUD at Jared · As of November 2, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556946487. Listed at 8 retailers as of November 1, 2026, with prices from $14,804 to $18,279, a $3,475 spread on the same certified stone. Jared lists it at $18,279. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556946487
Dimensions11.51 × 5.96 × 3.79 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
11.51 mm5.96 mm1.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556946487
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

How it works →
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: Nov 1
Current: $18,279 AUD|Low: $13,523 AUD|High: $18,607 AUD|Avg: $16,491 AUD|-1.8%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$14,804 AUD
Retailer 7$14,988 AUD
Retailer 2$15,583 AUD
Retailer 4$15,921 AUD
Retailer 6$16,785 AUD
Retailer 5$17,679 AUD
Retailer 8$17,679 AUD
Jared$18,279 AUD

30 data points across 8 retailers

8 retailers$14,804 AUD to $18,279 AUD

B
Cheapest Retailer
-
$14,804 AUD
SGD 14,020 SGD
B
Retailer 2
-
$14,988 AUD
$10,504 USD
View
Final sale: no returns
B
Retailer 3
-
$15,583 AUD
£8,599 GBP
View
B
Retailer 4
-
$15,921 AUD
$11,158 USD
View
B
Retailer 5
-
$16,785 AUD
$11,763 USD
View
B
Retailer 6
-
$17,679 AUD
$12,390 USD
View
B
Retailer 7
-
$17,679 AUD
$12,390 USD
View
Most Expensive
B
Jared
160009497 · Nov 2
$18,279 AUD
$12,810 USD
View
7 more retailers have this diamond
Prices start from $14,804 AUDSave up to $3,475 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
$14,804 AUD