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Round|Natural|GIA

1.78ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 2554414140

Certificate GIA 2554414140

Diamond specifications and retailer prices

From €3,840 EUR
As of November 6, 2026
Save €449 EUR (10%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €6,646 EUR at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.78ct natural round diamond

This 1.78ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554414140. Listed at 7 retailers as of November 5, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.78
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2554414140
Dimensions7.64 × 7.69 × 4.83 mm
L/W Ratio1.01
Star length45%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.64 mm7.69 mm1.78 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554414140
Side View
Table 56.0%Crown 36.5°GirdlePavilion 40.6°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: €3,840 EUR|Low: €3,820 EUR|High: €4,605 EUR|Avg: €4,245 EUR|-1.0%
Retailer 1
Retailer 2
Retailer 3
November 6, 2026
Retailer 1€3,840 EUR
Retailer 2€4,289 EUR
Retailer 3€4,605 EUR

38 data points across 3 retailers

7 retailers€3,840 EUR to €4,289 EUR

Retailer 1
-
€3,815 EUR
Price last confirmed 29 days ago
Retailer 2
-
€3,815 EUR
View
Price last confirmed 29 days ago
B+
Retailer 3
-
€3,840 EUR
View
Retailer 4
-
€3,870 EUR
View
Price last confirmed 38 days ago
B+
Retailer 5
-
€4,289 EUR
View
Retailer 6
-
€4,402 EUR
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
e8b3dc68-5cac-4f90-9ac0-90bb322a9b0f · Oct 3
€6,646 EUR
$7,460 USD
View
Price last confirmed 34 days ago
6 more retailers have this diamond
Prices start from €3,840 EURSave up to €449 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+
1.78ct Round
€3,840 EUR