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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6541995939

Certificate GIA 6541995939

Diamond specifications and retailer prices

From $14,285 AUD
$10,011 USD
As of November 1, 2026
Save $4,990 AUD (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $19,274 AUD at 77 Diamonds · As of November 1, 2026
View at 77 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 F 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 6541995939. Listed at 4 retailers as of November 1, 2026, with prices from $14,285 to $19,274, a $4,990 spread on the same certified stone. 77 Diamonds lists it at $19,274. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541995939
Dimensions11.57 × 5.99 × 3.71 mm
L/W Ratio1.93
Top View
11.57 mm5.99 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541995939
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $19,274 AUD|Low: $12,968 AUD|High: $20,305 AUD|Avg: $16,364 AUD|+0.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10$12,968 AUD
Retailer 8$13,727 AUD
Retailer 2$14,285 AUD
Retailer 5$15,132 AUD
Retailer 11$15,646 AUD
Retailer 6$15,964 AUD
Retailer 3$17,136 AUD
Retailer 4$17,569 AUD
Retailer 9$17,870 AUD
77 Diamonds$19,274 AUD
Retailer 7$20,305 AUD

35 data points across 11 retailers

4 retailers$14,285 AUD to $19,274 AUD

B+
Cheapest Retailer
-
$14,285 AUD
$10,011 USD
B+
Retailer 2
-
$15,132 AUD
$10,605 USD
View
B
Retailer 3
-
$15,964 AUD
$11,188 USD
View
Most Expensive
B
77 Diamonds
MQZHUVJPYD4 · Nov 1
$19,274 AUD
£10,636 GBP
View
3 more retailers have this diamond
Prices start from $14,285 AUDSave up to $4,990 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
$14,285 AUD