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Radiant|Natural|GIA

1.78ct G SI1 Radiant Natural Diamond

VG • G/SI1 • GIA 14918943

Certificate GIA 14918943

Diamond specifications and retailer prices

From $17,813 CAD
£10,041 GBP
As of November 1, 2026
Save $7,860 CAD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $25,672 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 1.78ct natural radiant diamond

This 1.78ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 14918943. Listed at 3 retailers as of November 1, 2026, with prices from $17,813 to $25,672, a $7,860 spread on the same certified stone. MOH London lists it at $25,672. 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

1.78
Carat
G
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 14918943
Dimensions6.86 × 6.70 × 4.78 mm
L/W Ratio1.02
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Cloud, Chip
Top View
6.86 mm6.70 mm1.78 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 14918943
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $25,672 CAD|Low: $17,813 CAD|High: $25,981 CAD|Avg: $21,450 CAD|-0.1%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$17,813 CAD
Retailer 3$20,712 CAD
MOH London$25,672 CAD

42 data points across 3 retailers

3 retailers$17,813 CAD to $25,672 CAD

B
Cheapest Retailer
-
$17,813 CAD
£10,041 GBP
B
Retailer 2
-
$20,712 CAD
€14,121 EUR
View
Most Expensive
B
MOH London
63BD051D9 · Nov 1
$25,672 CAD
£14,471 GBP
View
2 more retailers have this diamond
Prices start from $17,813 CADSave up to $7,860 CAD

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 Radiant
$17,813 CAD