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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2544827819

Certificate GIA 2544827819

Diamond specifications and retailer prices

From $14,282 AUD
$10,009 USD
As of November 1, 2026
Save $11,374 AUD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $25,656 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G 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 GIA 2544827819. Listed at 20 retailers as of October 30, 2026, with prices from $14,282 to $25,656, a $11,374 spread on the same certified stone. NZ Jewellers lists it at $25,656. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2544827819
Dimensions11.54 × 6.17 × 3.72 mm
L/W Ratio1.87
Top View
11.54 mm6.17 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2544827819
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.3%

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: $17,344 AUD|Low: $16,501 AUD|High: $24,330 AUD|Avg: $19,026 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$16,639 AUD
Retailer 6$16,729 AUD
Retailer 7$16,933 AUD
Retailer 1$17,344 AUD
Retailer 2$18,527 AUD
Retailer 5$22,615 AUD
Retailer 4$24,040 AUD

36 data points across 7 retailers

20 retailers$14,282 AUD to $25,656 AUD

B+
Cheapest Retailer
-
$14,282 AUD
$10,009 USD
B+
Retailer 2
-
$14,366 AUD
$10,068 USD
View
B+
Retailer 3
-
$15,196 AUD
$10,650 USD
View
B+
Retailer 4
-
$15,393 AUD
$10,788 USD
View
B+
Retailer 5
-
$15,522 AUD
$10,878 USD
View
B+
Retailer 6
-
$16,639 AUD
£9,182 GBP
View
B+
Retailer 7
-
$16,676 AUD
$11,687 USD
View
Retailer 8
-
$16,729 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$16,933 AUD
$11,867 USD
View
B+
Retailer 10
-
$17,063 AUD
$11,958 USD
View
B+
Retailer 11
-
$17,344 AUD
£9,571 GBP
View
B
Retailer 12
-
$17,965 AUD
$12,590 USD
View
B
Retailer 13
-
$17,965 AUD
$12,590 USD
View
B
Retailer 14
-
$18,527 AUD
€12,366 EUR
View
B
Retailer 15
-
$18,564 AUD
$13,010 USD
View
B
Retailer 16
-
$19,242 AUD
$13,485 USD
View
Retailer 17
-
$20,251 AUD
$14,192 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$22,615 AUD
ZAR 256,042 ZAR
View
B
Retailer 19
-
$24,040 AUD
£13,266 GBP
View
Most Expensive
B
NZ Jewellers
cddb2d76-c4a3-4bb6-8b7a-65550c87b1c7 · Oct 30
$25,656 AUD
$17,980 USD
View
19 more retailers have this diamond
Prices start from $14,282 AUDSave up to $11,374 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
$14,282 AUD