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1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1533428742

Certificate GIA 1533428742

Diamond specifications and retailer prices

From €5,856 EUR
$6,568 USD
As of November 2, 2026
Save €6,070 EUR (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €11,926 EUR at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533428742. Listed at 19 retailers as of November 2, 2026, with prices from €5,856 to €11,926, a €6,070 spread on the same certified stone. NZ Jewellers lists it at €11,926. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1533428742
Dimensions7.34 × 7.27 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.34 mm7.27 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1533428742
Side View
Table 57.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: €11,926 EUR|Low: €4,969 EUR|High: €11,926 EUR|Avg: €7,082 EUR
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
Retailer 17
Retailer 18
November 3, 2026
Retailer 9€5,423 EUR
Retailer 8€5,563 EUR
Retailer 5€5,856 EUR
Retailer 14€5,963 EUR
Retailer 7€5,984 EUR
Retailer 3€5,985 EUR
Retailer 15€6,174 EUR
Retailer 18€6,649 EUR
Retailer 11€6,745 EUR
Retailer 16€6,887 EUR
Retailer 6€7,204 EUR
Retailer 13€7,204 EUR
Retailer 4€7,262 EUR
Retailer 2€7,423 EUR
Retailer 17€7,445 EUR
Retailer 10€9,296 EUR
Retailer 12€9,937 EUR
NZ Jewellers€11,926 EUR

41 data points across 18 retailers

19 retailers€5,856 EUR to €11,926 EUR

Retailer 1
-
€4,891 EUR
$5,486 USD
Price last confirmed 55 days ago
B+
Retailer 2
-
€5,856 EUR
$6,568 USD
View
Retailer 3
-
€5,876 EUR
$6,590 USD
View
Price last confirmed 46 days ago
B+
Retailer 4
-
€5,963 EUR
$6,688 USD
View
Final sale: no returns
B+
Retailer 5
-
€5,985 EUR
CA$9,323 CAD
View
B+
Retailer 6
-
€6,174 EUR
$6,925 USD
View
B
Retailer 7
-
€6,649 EUR
$7,458 USD
View
B+
Retailer 8
-
€6,745 EUR
£5,957 GBP
View
Retailer 9
-
€6,780 EUR
$7,604 USD
View
Price last confirmed 42 days ago
B+
Retailer 10
-
€6,887 EUR
$7,725 USD
View
Retailer 11
-
€7,147 EUR
$8,016 USD
View
Price last confirmed 44 days ago
B
Retailer 12
-
€7,204 EUR
$8,080 USD
View
B
Retailer 13
-
€7,204 EUR
$8,080 USD
View
B
Retailer 14
-
€7,262 EUR
$8,145 USD
View
B+
Retailer 15
-
€7,423 EUR
View
B
Retailer 16
-
€7,445 EUR
$8,350 USD
View
B
Retailer 17
-
€9,937 EUR
£8,776 GBP
View
Retailer 18
-
€10,848 EUR
$12,167 USD
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
e2dd3cb1-c754-4aa5-a1eb-a753c9f95080 · Nov 2
€11,926 EUR
$13,376 USD
View
18 more retailers have this diamond
Prices start from €5,856 EURSave up to €6,070 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.

B+
1.51ct Round
€5,856 EUR