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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 $7,667 NZD
As of November 6, 2026
Save $897 NZD (10%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $13,271 NZD 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,667 NZD|Low: $7,628 NZD|High: $9,195 NZD|Avg: $8,476 NZD|-1.0%
Retailer 1
Retailer 2
Retailer 3
November 6, 2026
Retailer 1$7,667 NZD
Retailer 2$8,564 NZD
Retailer 3$9,195 NZD

38 data points across 3 retailers

7 retailers$7,667 NZD to $8,564 NZD

Retailer 1
-
$7,617 NZD
Price last confirmed 29 days ago
Retailer 2
-
$7,617 NZD
View
Price last confirmed 29 days ago
B+
Retailer 3
-
$7,667 NZD
View
Retailer 4
-
$7,728 NZD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
$8,564 NZD
View
Retailer 6
-
$8,790 NZD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
e8b3dc68-5cac-4f90-9ac0-90bb322a9b0f · Oct 3
$13,271 NZD
$7,460 USD
View
Price last confirmed 34 days ago
6 more retailers have this diamond
Prices start from $7,667 NZDSave up to $897 NZD

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
$7,667 NZD