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Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 2554189099

Certificate GIA 2554189099

Diamond specifications and retailer prices

From €1,988 EUR
SGD 3,001 SGD
As of October 31, 2026
Save €1,722 EUR (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,710 EUR at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554189099. Listed at 12 retailers as of October 31, 2026, with prices from €1,988 to €3,710, a €1,722 spread on the same certified stone. Helzberg Diamonds lists it at €3,710. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554189099
Dimensions6.87 × 6.11 × 4.21 mm
L/W Ratio1.12
Top View
6.87 mm6.11 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554189099
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €3,710 EUR|Low: €1,988 EUR|High: €4,024 EUR|Avg: €2,688 EUR|-7.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9€1,988 EUR
Retailer 7€2,122 EUR
Retailer 6€2,159 EUR
Retailer 4€2,323 EUR
Retailer 2€2,333 EUR
Retailer 12€2,351 EUR
Retailer 10€2,541 EUR
Retailer 8€2,560 EUR
Retailer 11€2,654 EUR
Retailer 5€3,045 EUR
Retailer 3€3,694 EUR
Helzberg Diamonds€3,710 EUR

28 data points across 12 retailers

12 retailers€1,988 EUR to €3,710 EUR

A
Cheapest Retailer
-
€1,988 EUR
SGD 3,001 SGD
A
Retailer 2
-
€2,122 EUR
$2,371 USD
View
A
Retailer 3
-
€2,159 EUR
$2,412 USD
View
A
Retailer 4
-
€2,323 EUR
$2,595 USD
View
A
Retailer 5
-
€2,333 EUR
£2,052 GBP
View
A
Retailer 6
-
€2,351 EUR
SGD 3,549 SGD
View
A
Retailer 7
-
€2,541 EUR
$2,839 USD
View
A
Retailer 8
-
€2,560 EUR
$2,860 USD
View
A
Retailer 9
-
€2,654 EUR
$2,965 USD
View
A
Retailer 10
-
€3,045 EUR
$3,402 USD
View
A
Retailer 11
-
€3,694 EUR
$4,127 USD
View
Most Expensive
A
Helzberg Diamonds
XZRILLKHOPGPP · Nov 1
€3,710 EUR
$4,145 USD
View
11 more retailers have this diamond
Prices start from €1,988 EURSave up to €1,722 EUR

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 Cushion
€1,988 EUR