Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1558211257

Certificate GIA 1558211257

Diamond specifications and retailer prices

From $12,796 USD
As of October 30, 2026
Save $8,030 USD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $20,826 USD 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 E 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 1558211257. Listed at 13 retailers as of October 30, 2026, with prices from $12,796 to $20,826, a $8,030 spread on the same certified stone. NZ Jewellers lists it at $20,826. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558211257
Dimensions11.60 × 5.94 × 3.77 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Knot, Natural
Top View
11.60 mm5.94 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558211257
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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: Oct 30
Current: $14,023 USD|Low: $10,543 USD|High: $19,750 USD|Avg: $14,402 USD|-1.0%
Retailer 1
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
October 30, 2026
Retailer 6$10,543 USD
Retailer 4$12,790 USD
Retailer 13$12,796 USD
Retailer 7$13,104 USD
Retailer 12$13,217 USD
Retailer 2$13,337 USD
Retailer 11$13,412 USD
Retailer 5$13,537 USD
Retailer 14$13,545 USD
Retailer 1$14,023 USD
Retailer 3$15,137 USD
Retailer 15$15,517 USD
Retailer 9$15,719 USD
Retailer 10$18,260 USD
Retailer 8$19,619 USD

37 data points across 15 retailers

13 retailers$12,796 USD to $20,826 USD

B+
Cheapest Retailer
-
$12,796 USD
B
Retailer 2
-
$13,217 USD
View
Final sale: no returns
B+
Retailer 3
-
$13,337 USD
View
Retailer 4
-
$13,412 USD
A$20,633 AUD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$13,545 USD
View
B+
Retailer 6
-
$14,023 USD
£11,041 GBP
View
B+
Retailer 7
-
$14,712 USD
View
B
Retailer 8
-
$14,942 USD
View
B
Retailer 9
-
$15,517 USD
View
B
Retailer 10
-
$15,719 USD
€14,970 EUR
View
B
Retailer 11
-
$18,260 USD
ZAR 294,993 ZAR
View
B
Retailer 12
-
$19,619 USD
£15,448 GBP
View
Most Expensive
B
NZ Jewellers
c4c34995-0942-4c95-a076-5438e9cfa13b · Oct 30
$20,826 USD
View
12 more retailers have this diamond
Prices start from $12,796 USDSave up to $8,030 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+
1.51ct Marquise
$12,796 USD