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Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 7558706544

Certificate GIA 7558706544

Diamond specifications and retailer prices

From $10,364 SGD
$8,104 USD
As of November 2, 2026
Save $9,456 SGD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $19,820 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded I 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 7558706544. Listed at 23 retailers as of October 30, 2026, with prices from $10,364 to $19,820, a $9,456 spread on the same certified stone. NZ Jewellers lists it at $19,820. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.32°
Pavilion angle41.54°
OriginNatural
Grading LabGIA
CertificateGIA 7558706544
Dimensions11.37 × 6.01 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.37 mm6.01 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558706544
Side View
Table 61.0%Crown 39.32°Girdle: MED-THKPavilion 41.54°Culet: NoneDepth 62.8%

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 2
Current: $19,820 SGD|Low: $10,258 SGD|High: $19,820 SGD|Avg: $13,859 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 3$10,364 SGD
Retailer 6$11,486 SGD
Retailer 5$11,785 SGD
Retailer 14$11,892 SGD
Retailer 16$11,892 SGD
Retailer 4$12,884 SGD
Retailer 9$12,906 SGD
Retailer 12$13,079 SGD
Retailer 15$13,082 SGD
Retailer 8$13,231 SGD
Retailer 13$13,235 SGD
Retailer 7$13,991 SGD
Retailer 2$14,979 SGD
Retailer 11$17,471 SGD
Retailer 10$18,573 SGD
NZ Jewellers$19,820 SGD

44 data points across 16 retailers

23 retailers$10,364 SGD to $19,820 SGD

B+
Cheapest Retailer
-
$10,364 SGD
$8,104 USD
B+
Retailer 2
-
$11,135 SGD
$8,707 USD
View
B
Retailer 3
-
$11,486 SGD
$8,981 USD
View
B
Retailer 4
-
$11,785 SGD
$9,215 USD
View
B
Retailer 5
-
$11,892 SGD
$9,299 USD
View
B
Retailer 6
-
$11,892 SGD
$9,299 USD
View
Final sale: no returns
B
Retailer 7
-
$11,992 SGD
$9,377 USD
View
B
Retailer 8
-
$12,884 SGD
$10,074 USD
View
B+
Retailer 9
-
$12,906 SGD
£7,946 GBP
View
Retailer 10
-
$13,079 SGD
A$15,733 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$13,082 SGD
$10,229 USD
View
Retailer 12
-
$13,231 SGD
$10,346 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$13,235 SGD
$10,349 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$13,991 SGD
$10,940 USD
View
Price last confirmed 11 days ago
Retailer 15
-
$13,991 SGD
$10,940 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$14,086 SGD
$11,014 USD
View
B
Retailer 17
-
$14,190 SGD
$11,096 USD
View
Retailer 18
-
$14,464 SGD
$11,310 USD
View
Price last confirmed 12 days ago
B
Retailer 19
-
$14,866 SGD
$11,624 USD
View
B
Retailer 20
-
$14,979 SGD
€11,155 EUR
View
B
Retailer 21
-
$17,471 SGD
ZAR 220,698 ZAR
View
B
Retailer 22
-
$18,573 SGD
£11,435 GBP
View
Most Expensive
B
NZ Jewellers
516e55f6-e4ab-4615-9d7f-69bdbc8f4a91 · Oct 30
$19,820 SGD
$15,498 USD
View
22 more retailers have this diamond
Prices start from $10,364 SGDSave up to $9,456 SGD

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+
1.50ct Marquise
$10,364 SGD