Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1543994919

Certificate GIA 1543994919

Diamond specifications and retailer prices

From €6,592 EUR
$7,365 USD
As of October 30, 2026
Save €5,590 EUR (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €15,089 EUR at NZ Jewellers · As of September 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1543994919. Listed at 19 retailers as of October 29, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543994919
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543994919
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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: Oct 30
Current: €6,916 EUR|Low: €5,985 EUR|High: €12,247 EUR|Avg: €8,233 EUR|+15.6%
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 16€6,592 EUR
Retailer 4€6,808 EUR
Retailer 1€6,916 EUR
Retailer 17€7,002 EUR
Retailer 3€7,237 EUR
Retailer 5€7,271 EUR
Retailer 9€7,545 EUR
Retailer 2€7,749 EUR
Retailer 7€8,010 EUR
Retailer 13€8,033 EUR
Retailer 10€8,063 EUR
Retailer 11€8,068 EUR
Retailer 6€8,137 EUR
Retailer 15€8,812 EUR
Retailer 8€9,690 EUR
Retailer 14€10,493 EUR
Retailer 12€12,183 EUR

33 data points across 17 retailers

19 retailers€6,592 EUR to €12,183 EUR

A
Cheapest Retailer
-
€6,592 EUR
$7,365 USD
A
Retailer 2
-
€6,808 EUR
$7,606 USD
View
A
Retailer 3
-
€6,916 EUR
$7,727 USD
View
A
Retailer 4
-
€7,002 EUR
$7,823 USD
View
A
Retailer 5
-
€7,237 EUR
$8,085 USD
View
B+
Retailer 6
-
€7,271 EUR
$8,123 USD
View
Final sale: no returns
B+
Retailer 7
-
€7,749 EUR
$8,657 USD
View
Retailer 8
-
€8,010 EUR
$8,949 USD
View
Price last confirmed 7 days ago
Retailer 9
-
€8,033 EUR
A$13,807 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
€8,063 EUR
£7,093 GBP
View
B+
Retailer 11
-
€8,068 EUR
$9,014 USD
View
B+
Retailer 12
-
€8,137 EUR
$9,091 USD
View
Retailer 13
-
€8,173 EUR
$9,131 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
€8,812 EUR
$9,845 USD
View
Retailer 15
-
€9,431 EUR
$10,536 USD
View
Price last confirmed 60 days ago
Retailer 16
-
€9,431 EUR
$10,536 USD
View
Price last confirmed 33 days ago
Retailer 17
-
€10,493 EUR
ZAR 189,383 ZAR
View
Price last confirmed 8 days ago
B
Retailer 18
-
€12,183 EUR
£10,717 GBP
View
Most Expensive
NZ Jewellers
5239c466-c2e3-4e18-a2db-1163951c3b6d · Sep 28
€15,089 EUR
$16,857 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from €6,592 EURSave up to €5,590 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 Round
€6,592 EUR