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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 1377240735

Certificate GIA 1377240735

Diamond specifications and retailer prices

From €3,368 EUR
HK$29,400 HKD
As of November 1, 2026
Save €4,226 EUR (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €7,594 EUR at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1377240735. Listed at 18 retailers as of October 30, 2026, with prices from €3,368 to €7,594, a €4,226 spread on the same certified stone. NZ Jewellers lists it at €7,594. 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
I
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1377240735
Dimensions7.04 × 6.95 × 4.65 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Feather
Top View
7.04 mm6.95 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1377240735
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.5%

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: Nov 1
Current: €7,594 EUR|Low: €2,967 EUR|High: €7,594 EUR|Avg: €4,386 EUR|+9.0%
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 1, 2026
Retailer 15€3,368 EUR
Retailer 6€3,877 EUR
Retailer 4€3,960 EUR
Retailer 17€4,021 EUR
Retailer 5€4,190 EUR
Retailer 7€4,270 EUR
Retailer 10€4,283 EUR
Retailer 13€4,486 EUR
Retailer 3€4,540 EUR
Retailer 8€4,540 EUR
Retailer 9€4,540 EUR
Retailer 11€4,670 EUR
Retailer 18€4,676 EUR
Retailer 2€5,116 EUR
Retailer 16€5,239 EUR
Retailer 14€5,581 EUR
Retailer 12€7,231 EUR
NZ Jewellers€7,594 EUR

26 data points across 18 retailers

18 retailers€3,368 EUR to €7,594 EUR

B+
Cheapest Retailer
-
€3,368 EUR
HK$29,400 HKD
B+
Retailer 2
-
€3,877 EUR
$4,331 USD
View
B+
Retailer 3
-
€3,960 EUR
$4,424 USD
View
B+
Retailer 4
-
€4,021 EUR
$4,492 USD
View
B+
Retailer 5
-
€4,190 EUR
$4,681 USD
View
Final sale: no returns
B+
Retailer 6
-
€4,270 EUR
$4,770 USD
View
B+
Retailer 7
-
€4,283 EUR
SGD 6,466 SGD
View
B+
Retailer 8
-
€4,486 EUR
£3,946 GBP
View
B+
Retailer 9
-
€4,540 EUR
$5,072 USD
View
B+
Retailer 10
-
€4,540 EUR
$5,072 USD
View
B+
Retailer 11
-
€4,540 EUR
$5,072 USD
View
B+
Retailer 12
-
€4,670 EUR
£4,108 GBP
View
B+
Retailer 13
-
€4,676 EUR
$5,224 USD
View
B+
Retailer 14
-
€5,116 EUR
View
B
Retailer 15
-
€5,239 EUR
$5,853 USD
View
B
Retailer 16
-
€5,581 EUR
ZAR 100,727 ZAR
View
B
Retailer 17
-
€7,231 EUR
£6,361 GBP
View
Most Expensive
B
NZ Jewellers
b1e3832e-6607-4c7c-8ab6-d32f401f6ec3 · Oct 30
€7,594 EUR
$8,484 USD
View
17 more retailers have this diamond
Prices start from €3,368 EURSave up to €4,226 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
€3,368 EUR