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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 $8,104 USD
As of November 2, 2026
Save $7,394 USD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $15,498 USD 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 $8,104 to $15,498, a $7,394 spread on the same certified stone. NZ Jewellers lists it at $15,498. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $15,498 USD|Low: $8,021 USD|High: $15,498 USD|Avg: $10,837 USD
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$8,104 USD
Retailer 6$8,981 USD
Retailer 5$9,215 USD
Retailer 14$9,299 USD
Retailer 16$9,299 USD
Retailer 4$10,074 USD
Retailer 9$10,092 USD
Retailer 12$10,227 USD
Retailer 15$10,229 USD
Retailer 8$10,346 USD
Retailer 13$10,349 USD
Retailer 7$10,940 USD
Retailer 2$11,713 USD
Retailer 11$13,661 USD
Retailer 10$14,522 USD
NZ Jewellers$15,498 USD

44 data points across 16 retailers

23 retailers$8,104 USD to $15,498 USD

B+
Cheapest Retailer
-
$8,104 USD
B+
Retailer 2
-
$8,707 USD
View
B
Retailer 3
-
$8,981 USD
View
B
Retailer 4
-
$9,215 USD
View
B
Retailer 5
-
$9,299 USD
View
B
Retailer 6
-
$9,299 USD
View
Final sale: no returns
B
Retailer 7
-
$9,377 USD
View
B
Retailer 8
-
$10,074 USD
View
B+
Retailer 9
-
$10,092 USD
£7,946 GBP
View
Retailer 10
-
$10,227 USD
A$15,733 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$10,229 USD
View
Retailer 12
-
$10,346 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$10,349 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$10,940 USD
View
Price last confirmed 11 days ago
Retailer 15
-
$10,940 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$11,014 USD
View
B
Retailer 17
-
$11,096 USD
View
Retailer 18
-
$11,310 USD
View
Price last confirmed 12 days ago
B
Retailer 19
-
$11,624 USD
View
B
Retailer 20
-
$11,713 USD
€11,155 EUR
View
B
Retailer 21
-
$13,661 USD
ZAR 220,698 ZAR
View
B
Retailer 22
-
$14,522 USD
£11,435 GBP
View
Most Expensive
B
NZ Jewellers
516e55f6-e4ab-4615-9d7f-69bdbc8f4a91 · Oct 30
$15,498 USD
View
22 more retailers have this diamond
Prices start from $8,104 USDSave up to $7,394 USD

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
$8,104 USD