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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

E/SI1 • GIA 1558512133

Certificate GIA 1558512133

Diamond specifications and retailer prices

From $16,420 NZD
HK$72,300 HKD
As of November 1, 2026
Save $12,236 NZD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $31,201 NZD at NZ Jewellers · As of September 28, 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) and certified by GIA 1558512133. Listed at 15 retailers as of November 1, 2026, with a 75% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558512133
Dimensions11.64 × 5.87 × 3.72 mm
L/W Ratio1.98
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural
Top View
11.64 mm5.87 mm1.51 ctE / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558512133
Side View
Table 60.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $16,874 NZD|Low: $16,420 NZD|High: $29,589 NZD|Avg: $20,160 NZD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$16,420 NZD
Retailer 1$16,874 NZD
Retailer 9$18,232 NZD
Retailer 8$19,115 NZD
Retailer 5$20,214 NZD
Retailer 7$20,252 NZD
Retailer 3$20,529 NZD
Retailer 4$25,319 NZD
Retailer 2$28,656 NZD

39 data points across 9 retailers

15 retailers$16,420 NZD to $28,656 NZD

A
Cheapest Retailer
-
$16,420 NZD
HK$72,300 HKD
A
Retailer 2
-
$16,874 NZD
₹905,741 INR
View
B+
Retailer 3
-
$17,396 NZD
A$15,084 AUD
View
Retailer 4
-
$18,232 NZD
SGD 13,886 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$19,115 NZD
$10,773 USD
View
Retailer 6
-
$20,214 NZD
A$17,527 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$20,252 NZD
$11,414 USD
View
Final sale: no returns
B+
Retailer 8
-
$20,529 NZD
£9,110 GBP
View
Retailer 9
-
$22,209 NZD
$12,517 USD
View
Price last confirmed 25 days ago
Retailer 10
-
$22,386 NZD
$12,617 USD
View
Price last confirmed 34 days ago
Retailer 11
-
$22,640 NZD
$12,760 USD
View
Price last confirmed 32 days ago
B
Retailer 12
-
$25,319 NZD
$14,270 USD
View
B
Retailer 13
-
$28,656 NZD
£12,717 GBP
View
Retailer 14
-
$30,954 NZD
$17,446 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
ad8b1f53-a961-40b5-927b-82aed05985d4 · Sep 28
$31,201 NZD
$17,585 USD
View
Price last confirmed 35 days ago
14 more retailers have this diamond
Prices start from $16,420 NZDSave up to $12,236 NZD

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.

A
1.51ct Marquise
$16,420 NZD